• #### Same Side Interior and Same Side Exterior Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to describe same side interior and same side exterior angles and their special properties.
• #### Same Side Interior and Same Side Exterior Angles - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find missing same side interior and same side exterior angles.
• #### Same Side Interior and Same Side Exterior Angles - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find missing angles in a right trapezoid by identifying same side interior and exterior angles.
• #### Trapezoid Properties - Problem 3

##### Math›Geometry›Polygons
How to find the length of a side in an isosceles trapezoid given its side lengths in terms of variables and its perimeter.
• #### Parallelogram Properties - Problem 2

##### Math›Geometry›Polygons
How to find the perimeter of a parallelogram when the sides are given in terms of a variable.
• #### Adjacent Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define adjacent angles.
• #### Adjacent Angles - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to identify adjacent angles.
• #### Number of Diagonals in a Polygon - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of diagonals in a polygon when you know the number of sides.
• #### Number of Diagonals in a Polygon - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of sides in a polygon when you know the number of diagonals.
• #### Parallelogram Properties - Problem 3

##### Math›Geometry›Polygons
How to find the lengths of the diagonals in a parallelogram if they are given in terms of a variable.
• #### Parallelogram Properties - Concept

##### Math›Geometry›Polygons
How to identify all of the special properties of parallelograms and use them to solve problems.
• #### Trapezoid Properties - Concept

##### Math›Geometry›Polygons
How to identify a trapezoid and its special properties.
• #### Parallelogram Properties - Problem 1

##### Math›Geometry›Polygons
How to solve for variables when given the angles of a parallelogram in terms of those variables.
• #### Trapezoid Properties - Problem 2

##### Math›Geometry›Polygons
How to find all the angles in an isosceles trapezoid, given one angle.
• #### Trapezoid Properties - Problem 1

##### Math›Geometry›Polygons
How to find the measure of all of the angles in an isosceles trapezoid, given one of the upper angles.
• #### Triangle Midsegment Properties - Problem 1

##### Math›Geometry›Polygons
How to solve for lengths in a triangle with two midsegments.
• #### Triangle Midsegment Properties - Problem 2

##### Math›Geometry›Polygons
How to solve for angles in a triangle created by a midsegment.
• #### Triangle Midsegment Properties - Concept

##### Math›Geometry›Polygons
How to define a triangle midsegment and describe its special properties.
• #### ASA and AAS - Problem 2

##### Math›Geometry›Triangles
How to use ASA and AAS and properties of angles formed by a transversal of parallel lines to determine the congruence of vertical triangles and denote the congruence correctly.